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Inspection Procedure

  1. INSPECT FUSE (STOP, IGN, IG2) 
    1. Remove the STOP and IGN fuses from the instrument panel junction block.
    2. Remove the IG2 fuse from the engine room No. 1 relay block.
    3. Measure the resistance of the fuses.

      Standard resistance: 

      Below 1 Ω 

      NG: REPLACE FUSE 

      OK: Go to next step 

  2. INSPECT IG2 RELAY 
    1. Remove the IG2 relay from the instrument panel junction block.
    2. Measure the resistance of the relay.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Specified Condition
      3 - 5 10 kΩ or higher
      Below 1 Ω (when battery voltage is applied to terminals 1 and 2)

      NG: REPLACE IG2 RELAY 

      Fig 1: Identifying IG2 Relay Terminals
      G05999532Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Go to next step 

  3. INSPECT STOP LIGHT SWITCH 
    1. Remove the stop light switch.
    2. Measure the resistance of the switch.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Switch Condition Specified Condition
      1 - 2 Not pushed Below 1 Ω
      3 - 4 Pushed
      1 - 2 Pushed 10 kΩ or higher
      3 - 4 Not pushed

      NG: REPLACE STOP LIGHT SWITCH 

      Fig 2: Identifying Terminals Of Stop Light Switch Connector
      G05999533Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Go to next step 

  4. CHECK WIRE HARNESS (SWITCH - BATTERY) 
    1. Disconnect the A3 switch connector.
    2. Measure the voltage of the wire harness side connector.

      Standard voltage 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Switch Condition Specified Condition
      A3-2 - Body ground Always 11 to 14 V
      A3-4 - Body ground Ignition switch ON

      NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

      Fig 3: Identifying Terminals Of A3 Switch Connector
      G05999534Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Go to next step 

  5. CHECK WIRE HARNESS (ECM - BATTERY) 
    1. Disconnect the A9 ECM connector.
    2. Turn the ignition switch ON.
    3. Measure the voltage of the wire harness side connector.

      Standard voltage 

      for 2GR-FE 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Switch Condition Specified Condition
      A9-35 (ST1-) - Body ground Depressed 11 to 14 V
      A9-36 (STP) - Body ground Released
      A9-35 (ST1-) - Body ground Released Below 1 V
      A9-36 (STP) - Body ground Depressed
      Fig 4: Identifying Terminals Of A9 ECM Connector
      G05999535Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      for 2AR-FE 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Switch Condition Specified Condition
      A9-39 (ST1-) - Body ground Depressed 11 to 14 V
      A9-29 (STP) - Body ground Released
      A9-39 (ST1-) - Body ground Released Below 1 V
      A9-29 (STP) - Body ground Depressed

      NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

      OK: REPLACE ECM 

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